nsane-spuds wrote:what do you mean i didn't modify it i just cut the top pat of the torch and pushed the pipe over it... hop this answers your question

This will work for a while but you'll eventually have trouble with the hose slipping off, even with tight hose clamps...I've been there and done that. Get yourself a Mr. Heater propane tank adapter or one from BCarms you see advertising here. That way you can fit a proper barb and ideally a regulator on there.

all i really have to say is NASTY in good way of course lol v nice looking cannon it must be really loud due to that extreme c:b ........ hahahaha just imagine." ok its ready 3...2...1 ....... BOOM!!!! reeeeoooorrrrreeeeeor cops pull up ok son what you up to now !

nuclearspud wrote: By the way, how did you modify the propane valve (the torch valve) to accept a fitting? When i made mine i didn't have to mod the propane valve at all. The neck just unscrews from the valve. 1/8 fpt i believe. I'll post pictures some time

When I made mine, I just cut the curved part off, and used a pipe thread die to cut pipe threads into the brass. Worked good.

nuclearspud wrote:By the way, how did you modify the propane valve (the torch valve) to accept a fitting?

When i made mine i didn't have to mod the propane valve at all. The neck just unscrews from the valve. 1/8 fpt i believe. I'll post pictures some time

Are fpt threads compression fitting threads? I remember going to ACE and asking for a compression fitting to thread into a propane vavle, but all that did was confuse the poor guy that tied to help me.

Nice Cannon!! I'm new to spudfiles and i'm building a propane injected cannon similar to this one. I'm curious to how you figured out the size of your metering pipe to your chamber size??? Does your cannon fire every time or do you experience mulitple misfires with it?? I have already built a few hairspray cannons, but i'm looking for more power and reliability. Is Propane going to be a better way to go??

Wow, its been a long time i haven't been on the combustion cannon of the forums...

Kufive wrote:Where did you get it?

Home Depot

frankbirds wrote:hahahaha just imagine." ok its ready 3...2...1 ....... BOOM!!!! reeeeoooorrrrreeeeeor cops pull up ok son what you up to now !

Lol, that already happened twice

tatermasher wrote:So did you just buy that PVC or ABS or whatever it is at like a hardware store like home depot?

Yes

hansom72 wrote:Nice Cannon!! I'm new to spudfiles and i'm building a propane injected cannon similar to this one. I'm curious to how you figured out the size of your metering pipe to your chamber size??? Does your cannon fire every time or do you experience mulitple misfires with it?? I have already built a few hairspray cannons, but i'm looking for more power and reliability. Is Propane going to be a better way to go??

I didn't do any calculations to find the right sized pipe for the propane petering system, I simply built it with what i had lying around in my basement and then did the calculations to find the right pressure i needed to use. And yes, propane is the way to go.